AccelerometerThe device has an accelerometer, which is used in automatic image rotation. Accelerometer is connected toapplication processor through I2C bus. Image rotation has build-in hysteresis.Audio conceptAudio HW architectureThe functional core of the audio hardware is built around two ASIC’s: Cellular Modem ASIC D2800 and themixed signal EM ASIC N2200.There are four audio transducers:• Dynamic earpiece (part of UI/Slide module)• 2 Dynamic speakers• Electret microphoneIn addition to the audio transducers, N2200 also provides an output for the dynamic Vibra component. Allgalvanic audio accessories are connected to the AV-connector. Bluetooth audio module, that is connected toCellular Modem ASIC D2800 supports Bluetooth audio functionality. For some audio applications, part of theprocessing is done on application processor ASIC D4800, for example for Music Player.RM-313System ModulePage 6 –20 COMPANY CONFIDENTIAL Issue 1Copyright © 2007 Nokia. All rights reserved.
